Abstract: A vibration suppression method and system of a rolling mill roller assembly based on a vibration damping device are provided. The vibration suppression method includes: obtaining a first amplitude-frequency relationship during a vibration process of a rolling mill roller assembly vibration suppression system; based on the first amplitude-frequency relationship, determining two time domain relationships and two second amplitude-frequency relationships by a simulation analysis; based on the two time domain relationships and two second amplitude-frequency relationships, adjusting parameters of the vibration damping device until a vibration displacement of the rolling mill roller assembly vibration suppression system is less than or equal to a vibration displacement threshold. And provides a new solution for the stability control of the rolling mill, and ensures the reliability and stability of the vibration suppression of the rolling mill.

Abstract: There are provided a work-side position measurement device and a drive-side position measurement device for directly measuring positions of roll chocks in a rolling direction, and positions of upper and lower working rolls and upper and lower backup rolls in the rolling direction are adjusted to zero point or predetermined positions. Alternatively, a change caused in the strip wedge due to a minute crossing of the axes of working rolls and backup rolls is calculated, and the quantities of leveling of a work-side rolling reduction cylinder device and a drive-side rolling reduction cylinder device are adjusted to make the strip edge equal to or smaller than a predetermined value. Accordingly, the bilateral asymmetry (strip wedge) of the thickness distribution of a rolled material is easily adjusted even in the event that the positions of the roll chocks in the rolling direction are changed due to wear on various components.

Abstract: A rolling mill of four-high or more is provided that includes: measurement apparatuses that adopt any one roll as a reference roll, and measure at least rolling direction forces acting on roll chocks on a work side and roll chocks on a drive side of each roll other than a backup roll; pressing apparatuses that press the roll chocks in the rolling direction; driving apparatuses that move the roll chocks in the rolling direction; and a position control unit that fixes a rolling direction position of the roll chocks of the reference roll as a reference position, and drives the driving apparatuses to control the positions in the rolling direction of the roll chocks based on a rolling direction force difference so that the rolling direction force difference of each roll is a value within an allowable range.

Abstract: An asynchronous rolling mill with a super large diameter ratio comprises a rolling mill stand, a press-down device, a balancing device, an upper roll system, and an arc-shaped plate device. The arc-shaped plate device comprises an arc-shaped plate, the arc-shaped plate is arranged opposite to the upper roll, and the arc-shaped plate and the upper roll are cooperated to roll strips. The present disclosure also provides a method for rolling a strip using an asynchronous rolling mill with a super large diameter ratio. The asynchronous rolling mill can roll with super large diameter ratio and different speeds, and has a large angle to engage, thereby reducing the external friction force of a workpiece and improving strip forming quality.

Abstract: A method for setting a rolling mill, the method being executed before reduction position zero point adjustment or before the start of rolling, and including: a first process of setting rolls in an open state, and with respect to each of the upper roll assembly and the lower roll assembly, adjusting positions of roll chocks in a rolling direction based on a torque acting on the work roll or a vertical roll load difference; and a second process of, after the first process, setting rolls in a kiss roll state, measuring a vertical roll load in two rotational states on a work side and a drive side, and moving roll chocks of a roll assembly on the opposite side to a reference roll simultaneously and in a same direction so that the vertical roll load difference falls within an allowable range to thereby adjust the positions of the roll chocks.

Abstract: A powder magnetic core which exhibits a high compact density and a reduced iron loss can be obtained by compacting a soft magnetic powder in which the mass ratio of soft magnetic powder particles that pass through a filter having an opening of 75 ?m is 95 mass % or higher relative to the whole amount of the soft magnetic powder and which has a mean strain of less than 0.100%.

Abstract: A fully hydraulic edging system suitable for use in wide plate mills is disclosed. The need for electro-mechanical screws to effect large movements of the side rollers is avoided by employing a pull-back hydraulic cylinder for this purpose. The main hydraulic cylinders are switched to a non-operational mode during large movements thus avoiding the need for large volumes of hydraulic fluid to be transferred under high pressure.

Abstract: Elimination of play between rolls 13 and main bearings 12 in a non-forming area and forming of material to be formed in a forming area are repeated while play between a housing 10 for the rolls 13 and main bearing axle boxes 11 is always eliminated.

Abstract: A vibration damping system by means of a hydraulic actuation system, in particular for rolling mills, comprising at least one hydraulic actuator (1) having a movable part (11) and a corresponding hydraulic feeding circuit (2), and hydraulic damping means (3) for a vibrating force acting on the movable part (11) of the hydraulic actuator (1); the damping means (3) being connected to the hydraulic circuit (2) to actuate a damping of the vibrating force, wherein that the damping means (3) comprise a double chamber cylinder (31) having a first chamber (34) hydraulically connected to the hydraulic circuit (2), and a movable part (35) connected to an electric damping part (32), with the first chamber (34) hydraulically connected to and communicating with the second chamber (33) of the double chamber cylinder (31) by means of a calibrated pipe (36).

Abstract: A method and an apparatus for suppression of oscillations in a rolling installation is described. By means of a hydraulic roller engagement third-octave oscillations are effectively suppressed, thus making it possible to improve the quality of the rolled material and/or the productivity of the rolling installation. A manipulated variable is supplied to an electrohydraulic actuating element that acts on at least one hydraulic actuator for the roller engagement and has a rated flow rate of ?50 l/min. At least a portion of the frequency response at frequencies f?80 Hz has a magnitude drop of ?3 dB, and the phase lag ? in this frequency range satisfies the conditions f?19·{square root over (?)}+3.1·10?6·?4 and ?<90°.

Abstract: The invention relates to a roll stand comprising at least one roll (1) having a rotation axis (a), said roll being supported in two installed parts (2, 3) disposed in the axial end regions of the roll (1) and each having a center plane (M), wherein the roll (1) can be positioned in the direction perpendicular to the transport direction (F) of the product to be rolled by means of at least one positioning element (4). In order to be able to introduce a bending moment acting counter to the roll bending moment into the roller in a simple manner and without additional elements, according to the invention, each installed part (2, 3) is connected to a bending lever (5, 6) and the positioning element (4) is disposed such that the positioning force thereof is introduced into the bending lever (5, 6) at a location (G) removed from the center plane (M) of the installed part (2, 3), and thereby into the installed part (2, 3).

Abstract: The present application relates to a vibration damping system for a rolling mill comprising a rolling cage and a bending adjustment system (3,3?) of the rollers comprising hydraulic actuators acting on the rollers and hydraulic circuits (18, 19) for feeding, and hydraulic damping means (25, 31, 32) of a force connected to the hydraulic circuits (18, 19) for actuating a damping effect by means of the hydraulic actuators. The hydraulic damping means comprises a pair of hydraulic pumps (25B, 25C) or a pair of hydraulic cylinders with a dual chamber, connected in an opposite direction to each other to the hydraulic circuits (18, 19).

Abstract: An improved roll bending system is described for the work rolls and intermediate rolls in a six high mill. New bending blocks apply improved roll bending forces to the roll chocks, and additionally, are designed to move vertically and rotate, which provide important benefits to maintenance and enhance the rolling operation. Additionally, important related details to the mill operation and bending blocks provide operational improvements during roll changing.

Abstract: A device for adjusting the distance of stripper chisels from a circumference of work rolls supported in chocks of a roll stand, wherein the stripper chisels are movable parallel to the rolling line in direction towards and away from the roll gap. To adapt to different operating positions and diameters of the work rolls, the stripper chisels are arranged in a horizontally displaceable stand roller table. The movement of the stand roller table is linked with the vertical movement of the bottom work roll so that the stripper chisel can be moved away from the work roll when the bottom work roll moves upward, and vice versa.

Abstract: A rolling mill stand and related rolling mill for rolling rod-shaped bodies, even large in size, which meets the requirement of stiffness uniformity of the rolling mill stands in the transversal direction, all the hydraulic capsules being firmly fixed to the external structure of the rolling mill and providing for the side change of the rolls of each stand. The arrangement of rolling rolls and related extensions of each rolling mill stand is such to avoid problems of corrosion and damaging to the extensions themselves and to the reducers due to the drainage of the cooling waters.

Abstract: A gauge control apparatus reduces deviation of an actual plate thickness from a target plate thickness on the delivery side of a rolling mill, in all speed ranges, and produces good products by controlling plate thickness considering changes in the oil film thickness of oil film bearings of backup rolls and the deformation resistance of a rolled material with respect to rolling speeds. The gauge control apparatus computes an oil film thickness compensation value to compensate for increase and decrease of the gap resulting from a change in thickness of the oil film bearing attributable to rolling speeds, an acceleration compensation value to compensate for increase and decrease of plate thickness on the delivery side of the rolling mill resulting from a change in deformation resistance of the rolled material attributable to rolling speeds, and deviation of the predicted plate thickness from the target plate thickness, in consideration of the computed compensation values.

Abstract: Provided is a roll unit for use in a surface treatment of a copper foil, wherein shaft sleeves are fitted to a roll shaft of a roll so that the roll shaft is rotatably supported by a bearing via the shaft sleeves. Additionally provided is a roll unit wherein the shaft sleeves consist of two sleeves, namely a roll-side sleeve arranged on a roll main body side and a tapered sleeve arranged on a shaft end side, an oil seal is arranged between the roll-side sleeve and a bearing box, and the tapered sleeve is supported by a bearing disposed in the bearing box.

Abstract: An apparatus for continuously forming an extruded sheet product having an extruder assembly with a sheet die for delivering flowable material. A roll stand assembly has a main frame with first and second rolls. A vertical height positioning mechanism is operated to vary the relationship between the sheet die and nip location between rolls and has first and second lift components that cooperate with the main frame at first and second laterally spaced locations. The first and second lift components are each movable in first and second opposite paths to selectively elevate and lower the nip location relative to the sheet die. The vertical height positioning mechanism further has an actuating system to selectively and simultaneously cause the first and second lift components to move.

Abstract: A bending device for two working rolls of a rolling stand. Guide blocks provided in lateral roll housings for guiding two pressure-transmission bodies vertically adjustably with respect to each other and, on which the working rolls are supported via chocks. Bending cylinders are arranged in pairs between the pressure-transmission bodies at each end of the rolls. Each cylinder has a piston rod acting on one pressure-transmission body and a cylinder at the respective other pressure-transmission body. Each pressure-transmission body is supported on a respective guide block in a sliding manner. So that loads acting on the pressure-transmission bodies can be introduced into the guide block free of edge pressure, the pressure-transmission bodies are supported on the respective guide blocks in a sliding manner by self-adjusting wearing plates which include surfaces that enable both sliding and pivoting of the bodies with respect to the guide blocks.

Abstract: A fully hydraulic edging system suitable for use in wide plate mills is disclosed. The need for electro-mechanical screws to effect large movements of the side rollers is avoided by employing a pull-back hydraulic cylinder for this purpose. The main hydraulic cylinders are switched to a non-operational mode during large movements thus avoiding the need for large volumes of hydraulic fluid to be transferred under high pressure.

Abstract: A support arrangement (10) of a roll of a fibrous-web machine, has a first frame part (12) in which the roll (20) of the fibrous-web machine is supportable from its end when in use and a second frame part (22) in which the first frame part (12) is fastened by means of an elastic fastening. The arrangement has a motion direction control arrangement (34) for controlling the direction of the motion allowed by the elastic fastening in a way determined by the direction control arrangement (34).

Abstract: The invention relates to a roll bending device for the control of profile and flatness in the rolling of metal plates or strips. In particular the invention relates to the well known principle of roll bending by using hydraulic cylinders to modify the load distribution between rolls of a rolling mill stand and a rolled stock e.g. a metal plate or a strip in order to control the profile and flatness of the metal plate or strip. A special design to allow safe roll bending even at large roll gauges is presented. The new design allows safe operation even at large roll gauges and high side loads.

Abstract: The present invention provides a Cluster mill which utilizes a Cluster mill gauge control system, has a high mill stiffness, a large work roll gap for threading, a rapid work roll gap opening, accurate roll force computation, side to side tilting, and utilizes work rolls over a much wider diameter range.

Abstract: The invention relates to an apparatus (100) for positioning a tool (21) in a profile rolling machine, comprising a base (10) and at least one spindle (30) extending in a first bore (17) of the base as abutment for the tool (21). A retraction rod (25) serves as connection between the base and the tool (21). A tractive force for the retraction rod (25) is generated by an actuator (50) and the tool is pulled by the retraction rod (25) against a tool stop (23). The first bore (17) is locally expanded to form a cylinder chamber (12). A piston (40) is mounted in an axially displaceable manner in the chamber (12). A pressure medium (M) is introduced via a pressure connection (46) into the base (10) into the cylinder chamber (12) between the base and the piston (40) for applying a force (F1) on the piston (40).

Abstract: The invention relates to a roller device (1) comprising a stand with support posts (2, 12, 33), wherein at least one roller (3, 13) of the roller stand is arranged in the space between the support posts and at least one adjuster device (5, 10, 30) is provided for adjusting the rollers (3), wherein the at least one adjuster device (5, 10, 30) is arranged between the rollers (3, 13) and the support posts (2, 2a, 2b, 2c, 2d, 12, 33) and comprises a pressure medium adjuster body (14, 23, 34).

Abstract: Disclosed is a milling device for inline-rolling a steel band which is produced especially by means of a twin-roll continuous casting process. Said milling device comprises at least two rolling units (20, 30) with working rolls (21, 31) that mill the steel band (11) and support rolls (22, 32) which support said working rolls. The working rolls and support rolls are rotatably mounted in bearing housings (23, 24, 33, 34). At least two rolling units (20, 30) are disposed successively in a monolithic or multipiece frame structure (15) such that the rolling temperatures between the rolling units differ only slightly while a simple and inexpensive design is created.

Abstract: The invention relates to a rolling device comprising at least two working rollers (2, 3) which are each mounted in a rolling stand (6) by means of at least one working roller chock (4, 5), wherein, to adjust a desired rolling nip (7), at least one of the working rollers (2, 3) in the rolling stand (6) can be adjusted relative to the other working roller (2, 3), in particular in the vertical direction, wherein axial displacement means (8) are provided by means of which a working roller (2, 3) can be displaced in its axial direction relative to the rolling stand (6), wherein the axial displacement means (8) comprise an actuating element (9) which is arranged coaxially to the axis (10) of the working roller (2, 3) to be displaced, and wherein at least one working roller (2, 3) is operatively connected to bending means (11) by means of which a roller can be subjected to a bending moment.

Abstract: The invention relates to a rolling device (1) comprising at least two working rolls (2, 3) which are respectively mounted in a roll stand (6) by means of working roll assembly pieces (4, 5). At least one of the working rolls (2, 3) is adjustable relative to the other working roll (2, 3) within the roll stand (6), especially in a vertical direction, so as to adjust a desired rolling gap. At east one working roll (2, 3) is effectively connected to bending means (7), with the aid of which said working roll (2, 3) can be impinged upon by a bending moment. The working roll assembly piece (4, 5) is provided with arms (9, 10) that laterally protrude relative to the axis (8) of the working roll (2, 3) to absorb the force generated by the bending means (7).

Abstract: A device for adjusting the distance between a pair of work rollers (40) in an edger of a rolling mill comprising actuator means associable with a respective work roller (40). The actuator means comprise a roll group (10; 10s) including two cylinders (20, 20s; 30, 30s) associated with each other so to slide inside each other and movable between a withdrawn or maximum distance position between the rollers (40) and an advanced or minimum distance position between the rollers (40).

Abstract: The invention relates to a rolling mill for tubes, in which a series of roll-holder containers (10) is housed in an external structure (2) extended along a rolling axis (L); the containers can slide inside the structure to be extracted therefrom and each one houses at least three rolls (17, 18, 19) controlled by respective driving motors (41, 42, 43). In accordance with the intervention the rolls (17, 18, 19) can be moved inside the containers (10) in a guided way along directions radial in relation to the rolling axis, in order to regulate the distance therefrom.

Abstract: A variable crimp on flange (COF) tool is provided for engaging and attaching a weather strip and like structures onto a flange. The COF tool includes a housing with two or more crimp rollers that project therefrom. For example, a fixed roller is mounted to the housing to rotate in a first direction, while a movable roller is mounted to the housing to rotate in a second, opposite direction. The movable roller is axially offset from and movable relative to the fixed roller. A driving mechanism, such as a pneumatic motor, is encased within the housing, and operates to rotate the crimp rollers. A biasing mechanism, such as a pneumatic piston assembly, is also encased within the housing, and operates to move the movable crimp roller relative to the fixed crimp roller. The COF tool is engineered such that the crimp speed, crimp rate, and crimp pressure are independently adjustable.

Abstract: The present invention provides a Cluster mill which utilizes a Cluster mill gauge control system, has a high mill stiffness, a large work roll gap for threading, a rapid work roll gap opening, accurate roll force computation, side to side tilting, and utilizes work rolls over a much wider diameter range.

Abstract: The present invention provides a Cluster mill which utilizes a Cluster mill gauge control system, has a high mill stiffness, a large work roll gap for threading, a rapid work roll gap opening, accurate roll force computation, side to side tilting, and utilizes work rolls over a much wider diameter range.

Abstract: An adjusting cylinder for long, rapid lifting movements in rolling stands, including vertical edging stands, wherein each adjusting cylinder has at least one piston which acts through the bearing chocks of at least one work roll or of an interposed roll to adjust a work roll on both sides, wherein each adjusting cylinder has a piston that is equipped with two oppositely directed piston rods, and each piston is inserted in a recess in the cylinder base or cylinder cover, such that the base and cover have coaxially arranged bores through which the piston rods pass. The surface formed by the piston and the piston rod is smaller than the surface formed by the piston and the piston rod.

Abstract: An adjusting cylinder for long, rapid lifting movements in rolling stands, includes vertical edging stands, wherein each cylinder has at least one piston, which acts through the bearing chocks of at least one work roll or of an interposed roll to adjust a work roll on both sides, wherein each adjusting cylinder has a piston that is equipped with two oppositely directed piston rods, and each piston is inserted in a recess in the cylinder base or cylinder cover, such that the base and cover have coaxially arranged bores through which the piston rods pass. The surface formed by one piston and the piston rod is smaller than the surface formed by another piston and the piston rod.

Abstract: The invention relates to an adjusting roll for the rapid adjustment of rolls in rolling frames, among others vertical upset forging frames, comprising at least one respective piston, which acts on both sides of a working roll to adjust the latter, by means of assembled parts of at least one working roll or an interposed support roll. The inventive adjusting roll has been improved by the provision of a piston (KO), which is equipped with two piston rods (ST1, ST2) that point in opposite directions and the piston or pistons (KO) are inserted into a respective cavity in the roll base (ZB) or roll cover (ZD), said base and cover comprising coaxial bores for conducting the piston rods (ST1, ST2).

Abstract: An adjusting cylinder for long, rapid lifting movements in rolling stands, including vertical edging stands, wherein each adjusting cylinder has at least one piston which acts through the bearing chocks of at least one work roll or of an interposed roll to adjust a work roll on both sides, wherein each adjusting cylinder has a piston that is equipped with two oppositely directed piston rods, and each piston is inserted in a recess in the cylinder base or cylinder cover, such that the base and cover have coaxially arranged bores through which the piston rods pass. The surface formed by the piston and the piston rod is smaller than the surface formed by the piston and the piston rod.

Abstract: An adjusting cylinder for long, rapid lifting movements in rolling stands, includes vertical edging stands, wherein each cylinder has at least one piston, which acts through the bearing chocks of at least one work roll or of an interposed roll to adjust a work roll on both sides, wherein each adjusting cylinder has a piston that is equipped with two oppositely directed piston rods, and each piston is inserted in a recess in the cylinder base or cylinder cover, such that the base and cover have coaxially arranged bores through which the piston rods pass. The surface formed by one piston and the piston rod is smaller than the surface formed by another piston and the piston rod.

Abstract: A method for manufacturing a hand-tool head involves rolling an elongate blank comprising many hand-tool heads which are connected head-end T by head-end T and tail-end W by tail-end W, then cutting off the blank with length of the hand-tool head, thereby forming hand-tool heads. A rolling mill for continuously rolling the hand-tool head includes an upper roller and a lower roller on each of which a ring-shape cavity is provided respectively. Both rollers are provided with a driving gear and a driven gear. When the rollers are to be driven, they are driven to rotate in opposite directions at a same speed by the gears. A plate billet is drawn into a mould cavity consisting of the two ring-shape cavities by the two ring-shape cavities after feeding in via an inlet of the rolling mill, so as to produce an elongate blank comprising many hand-tool head connected head-end by head-end at an outlet of the rolling mill.

Abstract: An apparatus for urging an oil film bearing onto and off of a roll neck in a rolling mill comprises an annular hydraulically actuated piston/cylinder unit mounted on a cylindrical section of the roll neck. The cylindrical neck section is delimited at one end by a circular shoulder on the roll neck, and at the opposite end by a circular groove in the roll neck. A retaining ring has lock arms pivotally movable into seated positions in the groove. The piston/cylinder unit is operable in a first mode in an abutting relationship with the lock arms to urge the bearing onto the roll neck, and is operative in a second mode in an abutting relationship with the shoulder to urge the bearing off of the roll neck. The piston/cylinder unit and the lock arms having complimentary tapered surfaces arranged to coact in urging the lock arms inwardly into their seated positions in response to the abutment of the piston/cylinder unit with the lock arms.

Abstract: There is provided a new and improved apparatus and method for rolling workpieces such as crankshafts. The apparatus has first and second rolling heads mounted at spaced positions along a common rolling arm to receive a crankshaft bearing therebetween which can then be shifted relative to one another along the common rolling arm to close the heads or rolling tools for clamping onto the workpiece. The in-line clamping action and force provided by the tools on the rolling arm are created by actuation of a tall, thin cylinder assembly including a number of aligned individual cylinders sized to keep the width of the cylinder assembly to a minimum so that all of the rolling arms can likewise be of a thin construction pivotally mounted on one side of the crankshaft and axially spaced according to the crankshaft bearing spacing for rolling all of the bearings in a single rolling operation.

Abstract: A roll changing carriage can be displaced transversely with respect to the strip rolling stand and a removal crossbar is provided for the removal of the set of backup rolls. In order to shorten the roll changing times and to automate the changing of the rolls, the removal crossbar can be positioned on the roll changing carriage and is provided with wheels on which the removal crossbar can be moved out of the roll changing carriage on guide rails running parallel to the rolls into the strip rolling stand on the intermediate roll rails, and can be pulled out of the strip rolling stand together with the set of backup rolls.

Abstract: An oil film bearing is disclosed for a rolling mill roll having a tapered neck leading to a reduced diameter end section. The bearing comprises an internally tapered sleeve received in a seated position on the tapered roll neck. The sleeve is journaled for rotation in a bushing fixed within a chock assembly. A tubular piston is received on and fixed relative to the reduced diameter end section of the roll. A cylinder is internally subdivided by the piston into first and second chambers. A sleeve ring abuts an end of the sleeve and a circular thrust component is interposed between and arranged to overlap adjacent segments of the sleeve ring and the piston.

Abstract: A rolling mill frame for the rolling of different rolled stock which requires different rolling forces and which has working rolls, back-up rolls, optionally a roll being device for the working rolls and optionally a device for adjusting and balancing the back-up rolls. The mill has pairs of adjusting cylinders between the roll stand and the chocks of the rolls which avoid large friction losses. The adjusting cylinders are each comprised of a telescoping cylinder in which a first cylinder with a large diameter for high rolling forces and a concentric cylinder with smaller diameter for smaller rolling forces are provided.

Abstract: A saddle for a backing assembly in a rolling mill has non-cylindrical bearing surfaces that accommodate wear by allowing the saddles to self-align. The non-cylindrical bearing surfaces help prevent the needle bearings from being pinched and driven into the gear rings. The non-cylindrical bearing surfaces are provided in different locations such as intermediate the eccentric and eccentric ring or intermediate the eccentric ring and the saddle ring.

Abstract: A method for eliminating the vibrational chatter in a rolling mill stand, whereby existing roll chocks are machined to allow commercially available thrusting means, including hydraulic cylinders and the accompanying fittings and tubing, to be installed directly into the chocks so that when activated the thrusting means thrust horizontally outward to take up any gapping or play occurring between the chock face and the mill housing during normal mill operations, thus effectively eliminating chatter.

Abstract: The invention relates to a method for detecting the vibrations of a roll stand (1) equipped with a hydraulic jack (6) as a device for adjusting the rolling rolls (4, 5). The hydraulic jack comprises a sensor (64) for measuring the position of the mobile portion relative to the fixed portion, this sensor supplying a digital signal (POS). In the method of the invention, the vibrations are detected by direct observation of the position signal (POS) and a comparison thereof relative to a spatio-temporal window (F) whose dimensions are determined as a function of the frequency to be detected. In accordance with the invention, it is possible to define different observation windows (F) suitable for the detection of different vibratory phenomena.

Abstract: The invention relates to a roll stand for hot-rolling or cold-rolling metallic strips. The roll stand comprises back-up rolls and work rolls (2, 3; 4, 5) which are respectively positioned in chocks (6; 7) in a rotating manner. Each chock (6; 7) can be displaced on two sides in guiding devices (8) of the column frame (9) for adjusting the roll gap (10) and can be additionally displaced on at least one side for adjusting the play, by means of horizontal piston cylinder units (11) arranged in the column frame (9). The aim of the invention is to completely eliminate the play in the vertical guiding device (8) of the work roll chocks (6; 7) during the rolling.

Abstract: A universal rolling stand with control of the space between the rolls comprises a pair of horizontal rolls and one or more vertical rolls with respective chocks, positioning housings and a guide for the chocks with adjustment tie rods (6, 7, 6?, 7?, 18, 18?, 19, 19?) anchored on one side to the housings and acting on the chocks for the adjustment and positioning of the rolls. Adjustment is performed by means of hydraulic capsules (8, 8?, 9, 9?, 20, 20?, 21, 21?) with two hydraulic chambers with dual actuation effect and a double stem at the ends of each tie rod.

Abstract: A device to bend the rolls in a rolling stand, wherein each roll to be bent is rotatably mounted in two corresponding chocks each associated to two series of two double-effect actuators, for a total of four actuators for each chock. Each actuator is disposed on opposite sides of the corresponding chock with respect to the axis of rotation (Y) of the roll to be bent.